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  1. let input = '';
  2.  
  3. while (line = readline()) {
  4.   input += line + '\n';
  5. }
  6.  
  7. const lines = input.trim().split('\n');
  8.  
  9. const results = lines.filter(line => {
  10.   const charCount = {};
  11.   for (const char of line) {
  12.     charCount[char] = (charCount[char] || 0) + 1;
  13.   }
  14.   return Object.values(charCount).includes(2);
  15. });
  16.  
  17. print(results.join('\n'));
  18.  
Success #stdin #stdout 0.04s 17736KB
comments (?)
stdin
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qwert
yyuhgcvb
iokhbo
poiu
stdout
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yyuhgcvb
iokhbo
https://ideone.com/ve3Fda
language:
JavaScript (SMonkey 60.2.3)
created:
1 day ago
visibility:
public

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